Home / 687,541.28-948,864.12-381,646.40

Finding the Fourth Proportional to 687,541.28, 948,864.12 and 381,646.40

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Solution

The fourth proportional to 687,541.28, 948,864.12 and 381,646.40 is: 526,703.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,541.28 : 948,864.12 = 381,646.40 : x
  2. Step 2: Convert to fraction form
    687,541.28/948,864.12 = 381,646.40/x
  3. Step 3: Cross multiply
    687,541.28x = 948,864.12 × 381,646.40
  4. Step 4: Simplify right side
    687,541.28x = 362,130,575,487.17
  5. Step 5: Solve for x
    x = 362,130,575,487.17/687,541.28
  6. Step 6: Final answer
    x = 526,703.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.